f)G 



Area ijranota \Am\i-. 

 (Syst. nat. cd. 12, p. 11 12— IJeovo, CoikIi. Kon. Ami, pi. 3, f. I.').— 

 Lischko, Jai>aii. Mfori-s-Concli. v. 1, j». 14."» — .Murse, Slicll-iiioiiiiJ of 

 Omori, p. 20. 1 



Tlii.s shell 1ms coinpiinitiAly iVw— I count LS— lilis iiuiblof wliicli, iK|i«.'ciiilly 

 the anterior ones, are gniniiliitctl. Tiio oiilliin-, oliliqiiely quii(]nin<oilar lui'l 

 ruimdetl at the ctl;^'8, esjx?cially at tlie obtiipc anterior, inferior edge, tlic hingu 

 etc. do not present any peeuliar eliaraeteiv. Tlie sincinjens of Takij;!L'>liim an> 

 very few in niiinKr, but tiny are partly well priK-rved and give iiiaijnivueai 

 evidence of the existence of this specicH in the tertiary layers of eentnil Ja|«in. 

 Their proportion.s arc exactly the Rime as Iho«; from Nngas;iki and from the 

 Oniori mound, Lrit they are smaller (28 inillim. lonj^ and 22 hi^h). The number 

 of riks beinj^ like tlie minimum of Oniori, the torti:iry fo.ssil «jieeinten» aro of 

 course much nearer akin to the latter than to the recent ones from Nai^ORiki. — 



The total number of P|iecics from Takigashira Mura is therefore 4<>, luid 

 this place is superior to tlie other localities near Yokohama in the same way tis 

 Oji is to the other place's in Tokio. Of the 53 species found altogether in tlie 

 environs of Yokohama, three fourths belong to Takigashim. 



The largo number of sjKicies common to the layers both of Yoktjhama and 

 Tokio would be sufficient to prove the identity of the formation, cvm if this 

 was not geologically evident. Of 53 species 41 are identical with Tokio ^leeil1l. 



As there are 75 species from all the places about Tokio altogetluT, und 

 2 from Kanagawa, 3 from the liliiffaiid 7 from T.ikig^ishir.», the total ninnW: r of 

 sjiecies is 87. 



